add missing license headers

Signed-off-by: leongross <leon.gross@9elements.com>

Author: leongross

src/platform/evidence.rs

@@ -1,3 +1,5 @@
+// Licensed under the Apache-2.0 license
+
 pub const PCR_QUOTE_BUFFER_SIZE: usize = 0x1984;
 
 pub type SpdmEvidenceResult<T> = Result<T, SpdmEvidenceError>;

src/platform/hash.rs

@@ -1,3 +1,5 @@
+// Licensed under the Apache-2.0 license
+
 pub type SpdmHashResult<T> = Result<T, SpdmHashError>;
 
 pub trait SpdmHash {

src/platform/mod.rs

@@ -1,3 +1,5 @@
+// Licensed under the Apache-2.0 license
+
 pub mod evidence;
 pub mod hash;
 pub mod rng;

src/platform/rng.rs

@@ -1,3 +1,5 @@
+// Licensed under the Apache-2.0 license
+
 pub type SpdmRngResult<T> = Result<T, SpdmRngError>;
 
 #[derive(Debug, PartialEq)]

src/platform/transport.rs

@@ -1,3 +1,5 @@
+// Licensed under the Apache-2.0 license
+
 use crate::codec::{CodecError, MessageBuf};
 
 pub type TransportResult<T> = Result<T, TransportError>;

src/test.rs

@@ -1,3 +1,5 @@
+// Licensed under the Apache-2.0 license
+
 use crate::{
     cert_store::{CertStoreResult, SpdmCertStore},
     context::SpdmContext,

tests/spdm_validator_host.rs

@@ -1,3 +1,5 @@
+// Licensed under the Apache-2.0 license
+
 //! Basic instantiation test for SpdmContext (host validator)
 //! Run with: cargo test --features std -- --nocapture